Nick is Robin of Sherwood's son, he has 5 bothers and sisters, one day prince John comes back with vampires and attack killing his mum and dad, and turn hid bothers and sisters, Little John saving him, Nick trains with Little John and some druids, to become a demon slayer, Nick fighting back and with the help of Little John and the druids, they win but at the cost of Little John, it was also decided that Nick should become immortal ageist Nick's wishes, now Nick must live forever fighting the demons

Nick has fought with Van Helsing, they make a secret organisation that combats demons he has fought in all English wars and lost his arm in WW1, in WW2 he gets a robot art, it uses magic and robotics, it does not work that well, but it's better then nothing

he's arm was based on Ed's from Fullmetal Alchemist, Metal Sonic and Genos from One Punch Man

Nick © Disney

D World, and arm © me